A good way to live in a foreign country where wages are low is to have a business that can be worked over the internet.

Usually in countries where the cost of living is low, that is a reflection of the very low wages. Prices for food and housing reflect what the locals can afford, which is not much. It doesn't help you much if best steak is 2 pounds sterling if you can only earn 30 pence an hour.

It's possible (probably) to set yourself up as a handyman service in areas where there is a large ex-pat population that doesn't speak the natrive language. I would think that you could charge the Brits slightly more than the local workers, simply because they can talk to you, and they can't explain to the locals what they need done. You'd have to know a lot about local construction, and it wouldn't make you rich, but you might be able to get enough work to support yourself.

If you have lots of cash, there is obviously a market for spec houses (speculative, you build them hoping you can sell them when they are done) to be sold to in-coming foreign nationals.